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首页> 外文会议>Fifth International Conference on Analysis of Discontinuous Deformation, ICADD-5 Oct 6-10, 2002 Beer Sheva, Israel >Numerical models for coupled thermo-hydro-mechanical processes in fractured rocks-continuum and discrete approaches
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Numerical models for coupled thermo-hydro-mechanical processes in fractured rocks-continuum and discrete approaches

机译：裂隙连续体和离散方法中热-水-力耦合过程的数值模型

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摘要

This article reviews the two main approaches of numerical modeling for the coupled thermo-hydro-mechanical (THM) processes in fractured rocks - the discrete and he equivalent continuum models, respectively. The presentation covers the governing equations derived fro n the conservation laws of mass, momentum and energy of the continuum mechanics, with focus on the FEM formulations and explicit bloc-fracture system representations for discrete models. Two applications related to nuclear waste repository design and performance assessment are presented as examples. Special attention is given to the DEM approach of homogenisation and upscaling for deriving equivalent continuum properties of fractured rocks based on the REV concept, with realistic representations of fracture systems. A brief sun mary of the trends, characteristics and outstanding issues in numerical modeling of fractured rocks is given a the end to highlight the advances and remaining difficulties.
机译：本文回顾了裂隙岩体中热-水-机械（THM）耦合过程数值建模的两种主要方法，分别是离散模型和等效连续模型。演讲内容涵盖了从连续力学的质量，动量和能量守恒定律推导的控制方程，重点是离散模型的FEM公式和明确的整体断裂系统表示。举例说明了与核废料库设计和性能评估有关的两个应用。特别注意均质化和放大的DEM方法，以REV概念为基础，得出裂隙岩体的等效连续体特性，并真实表达裂隙系统。最后，简要介绍了裂隙岩体数值模拟的趋势，特征和突出问题，以突出研究进展和仍然存在的困难。

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